Synthesis, characterization, and magnetic properties of room-temperature nanofluid ferromagnetic graphite

Souza, N. S.; Sergeenkov, S.; Speglich, C.; Rivera, V. A. G.; Cardoso, C. A.; Pardo, H.; Mombrú, A. W.; Rodrigues, A. D.; de Lima, O. F.; Araújo-Moreira, F. M.
December 2009
Applied Physics Letters;12/7/2009, Vol. 95 Issue 23, p233120
Academic Journal
We report the chemical synthesis route, structural characterization, and physical properties of nanofluid magnetic graphite (NFMG) obtained from the previously synthesized bulk organic magnetic graphite (MG) by stabilizing the aqueous ferrofluid suspension with an addition of active cationic surfactant. The measured magnetization-field hysteresis curves along with the temperature dependence of magnetization confirmed room-temperature ferromagnetism in both MG and NFMG samples.


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